Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
2175B	XOR Array math			x6390
2175A	Little Fairy's Painting implementation			x10830
2174F	Mosaic Tree combinatorics, dp, math, number theory, trees			x177
2174E2	Game of Scientists (Version 2) chinese remainder theorem, dfs and similar, interactive, math			x27
2174E1	Game of Scientists (Version 1) chinese remainder theorem, constructive algorithms, interactive, math			x44
2174D	Secret Message data structures, greedy, trees			x85
2174C2	Beautiful Patterns (Hard Version) math, probabilities			x482
2174C1	Beautiful Patterns (Easy Version) math, probabilities			x625
2174B	Wishing Cards dp, greedy			x1908
2174A	Needle in a Haystack greedy, strings, two pointers			x7467
2173F	Isla's Memory Thresholds binary search, data structures, divide and conquer, math			x258
2173E	Shiro's Mirror Duel greedy, interactive, probabilities, sortings			x896
2173D	Taiga's Carry Chains bitmasks, brute force, dp, greedy, math			x2137
2173C	Kanade's Perfect Multiples brute force, constructive algorithms, greedy, number theory			x7694
2173B	Niko's Tactical Cards dp, greedy, math			x12663
2173A	Sleeping Through Classes greedy, implementation			x17213
2172N	New Kingdom constructive algorithms, graphs, implementation		2800	x109
2172M	Maximum Distance To Port graphs, shortest paths		1300	x3062
2172L	Maximum Color Segment dp, implementation		2300	x504
2172K	Kindergarten Homework implementation, strings		2100	x593
2172J	Sliding Tiles data structures, divide and conquer, dsu		2300	x372
2172I	Birthday geometry		2000	x754
2172H	Shuffling Cards with Problem Solver 68! hashing, string suffix structures, strings		2500	x218
2172G	Gene Editor		3300	x39
2172F	Cluster Computing System graphs, greedy, math		1600	x1913
2172E	Number Maze implementation		1200	x3205
2172D	Divisor Card Game combinatorics, dp		3100	x58
2172C	Circles Are Far from Each Other binary search, greedy		3100	x60
2172B	Buses greedy, sortings		1800	x1337
2172A	ASCII Art Contest implementation		800	x8306
2171H	Shiori Miyagi and Maximum Array Score binary search, data structures, dp, sortings		2400	x721
2171G	Sakura Adachi and Optimal Sequences bitmasks, combinatorics, greedy, math		2000	x1526
2171F	Rae Taylor and Trees (hard version) binary search, constructive algorithms, data structures, dp, dsu, greedy, implementation, trees		1600	x4683
2171E	Anisphia Wynn Palettia and Good Permutations constructive algorithms, greedy, number theory		2000	x2642
2171D	Rae Taylor and Trees (easy version) binary search, data structures, dp, dsu, greedy, implementation, trees		1400	x7953
2171C2	Renako Amaori and XOR Game (hard version) bitmasks, games, greedy		1400	x8766
2171C1	Renako Amaori and XOR Game (easy version) bitmasks, games, greedy		1100	x14578
2171B	Yuu Koito and Minimum Absolute Sum math		900	x19879
2171A	Shizuku Hoshikawa and Farm Legs brute force, math		800	x27512
2170F	Build XOR on a Segment bitmasks, dp			x547
2170E	Binary Strings and Blocks combinatorics, data structures, dp			x1741
2170D	Almost Roman constructive algorithms, greedy, implementation			x1326
2170C	Quotient and Remainder binary search, greedy, two pointers			x8421
2170B	Addition on a Segment greedy, math			x10388
2170A	Maximum Neighborhood bitmasks, brute force, greedy, implementation, math			x15687
2169F	Subsequence Problem combinatorics, dp, fft, math		2700	x224
2169E	Points Selection dp, greedy		2400	x721
2169D2	Removal of a Sequence (Hard Version) binary search, divide and conquer, greedy, implementation, math, number theory		2100	x1760
2169D1	Removal of a Sequence (Easy Version) binary search, implementation, math, number theory		1500	x6027
2169C	Range Operation dp, greedy, math, two pointers		1300	x9551
2169B	Drifting Away greedy, implementation		1100	x12469
2169A	Alice and Bob greedy, implementation		900	x13766
2168C	Intercepting Butterflies bitmasks, constructive algorithms, graphs, interactive			x736
2168B	Locate binary search, combinatorics, constructive algorithms, greedy, interactive			x1355
2168A2	Encode and Decode (Hard Version) bitmasks, interactive, math			x2825
2168A1	Encode and Decode (Easy Version) constructive algorithms, interactive			x4293
2167G	Mukhammadali and the Smooth Array data structures, dp		1600	x8810
2167F	Tree, TREE!!! dfs and similar, dp, math, trees		1600	x5352
2167E	khba Loves to Sleep! binary search, data structures, geometry, greedy, implementation		1600	x7294
2167D	Yet Another Array Problem brute force, implementation, math, number theory		1000	x24827
2167C	Isamatdin and His Magic Wand! constructive algorithms, greedy, implementation, sortings		800	x30853
2167B	Your Name sortings, strings		800	x41569
2167A	Square? math, sortings		800	x45929
2166B	Tab Closing math		900	x13670
2166A	Same Difference brute force, greedy, strings		800	x17557
2165F	Arctic Acquisition data structures, greedy		3500	x124
2165E	Rainbow Branch constructive algorithms, dp, greedy, trees		3200	x164
2165D	Path Split graph matchings, greedy		2500	x683
2165C	Binary Wine bitmasks, greedy, math		2000	x2561
2165B	Marble Council dp, math, sortings		1900	x3373
2165A	Cyclic Merging constructive algorithms, greedy		1300	x10655
2164H	PalindromePalindrome data structures, strings		3400	x32
2164G	Pointless Machine constructive algorithms, graphs, interactive, trees		3300	x141
2164F2	Chain Prefix Rank (Hard Version) binary search, combinatorics, data structures, dfs and similar, dp, graphs, math, trees		2900	x352
2164F1	Chain Prefix Rank (Easy Version) combinatorics, dfs and similar, dp, math, trees		2600	x546
2164E	Journey data structures, dfs and similar, dsu, graphs, greedy		2300	x1370
2164D	Copy String greedy, implementation, strings, two pointers		1800	x4152
2164C	Dungeon binary search, brute force, data structures, greedy, sortings		1400	x8395
2164B	Even Modulo Pair brute force, math, number theory		1000	x14411
2164A	Sequence Game brute force, sortings		800	x17534
2163E	Plegma bitmasks, combinatorics, interactive		2700	x527
2163D2	Diadrash (Hard Version) binary search, interactive, math, sortings		2500	x1233
2163D1	Diadrash (Easy Version) binary search, brute force, divide and conquer, implementation, interactive		2100	x2270
2163C	Monopati brute force, combinatorics, dp, math, two pointers		1500	x6929
2163B	Siga ta Kymata constructive algorithms, greedy, implementation, math		1700	x7582
2163A	Souvlaki VS. Kalamaki brute force, greedy, math, sortings		800	x16899
2162H	Beautiful Problem dp		2900	x251
2162G	Beautiful Tree constructive algorithms, math, probabilities, trees		2200	x2413
2162F	Beautiful Intervals constructive algorithms, greedy		2100	x2483
2162E	Beautiful Palindromes constructive algorithms, greedy, schedules		1600	x7806
2162D	Beautiful Permutation binary search, interactive		1400	x10724
2162C	Beautiful XOR bitmasks, constructive algorithms, greedy		1100	x18484
2162B	Beautiful String brute force, constructive algorithms		1000	x24256
2162A	Beautiful Average brute force, greedy		800	x36501
2161H	Cycle Sort data structures		3500	x27
2161G	Bitwise And Equals bitmasks, greedy		3500	x71
2161F	SubMST combinatorics, graphs, trees		3000	x211
2161E	Left is Always Right combinatorics, implementation, math		2400	x648
2161D	Locked Out binary search, data structures, dp, greedy		2100	x2355
2161C	Loyalty constructive algorithms, greedy, sortings, two pointers		1200	x9946

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